Shutdown klutz problems

[Todd and Margo Chester]

Hi All,

I am running Xfce 4.4.2 on a CentOS 5.4 server.  The server is a critical
enterprise level server.  Twice now fumble fingers here has hit shutdown,
instead of, logout.  It is very, very embarrasing.  (And the third time
I do it, I may get my butt kicked.)

Is there a way to modify the exit utility so that it will give an extra 
prompt
for shutdown?  Can I substitute Gnome's shutdown prompt?  Is there
any modification I can make to keep this from happening again?

Many thanks,
-T